BS ISO 17170:2015 pdf download

BS ISO 17170:2015 pdf download

BS ISO 17170:2015 pdf download.Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for spherical indentation of porous ceramics
1 Scope
This International Standard describes the test methods for determining spherical indentation strength of porous ceramics, such as those employed for filters and catalyst carriers, that are carried out in air at room temperature.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 463, Geometrical Product Specifications (GPS) — Dimensional measuring equipment — Design and metrological characteristics of mechanical dial gauges
ISO 683-1, Heat-treatable steels, alloy steels and free-cutting steels — Part 1: Non-alloy steels for quenching and tempering·
ISO 683-3, Heat-treatable steels, alloy steels and free-cutting steels — Part 3: Case-hardening steels
ISO 1101, Geometrical product specifications (GPS) — Geometrical tolerancing — Tolerances of form,orientation, location and run-out
ISO 3290-1, Rolling bearings — Balls — Part 1: Steel balls
ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for external measurements — Design and metrological characteristics
ISO 4287, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Terms, definitions and surface texture parameters
ISO 7500-1, Metallic materials — Verification of static uniaxial testing machines — Part 1:Tension/compression testing machines — Verification and calibration of the force-measuring system
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 porous ceramics
ceramics with porosity of 30 % to 60 %, and pore diameter of 1 μm to 100 μm, for applications such as filters, catalyst carriers, humidity sensors, or molecular sieves, excluding structured honeycomb cellular channels
3.2 spherical indenter
sphere through which a compressive load is applied to the specimen
5.3 Pedestal
A pedestal placed below the specimen shall be made of carbon steel for mechanical use with a carbon content of 0,4 % to 0,6 % defined by in ISO 683-1 and ISO 683-3 or materials with the hardness over 150 Hv. The thickness of the pedestal shall be at least 10 mm, and the surface area of the pedestal contacting with the specimen is at least four times of the specimen cross-section area. The surface of the pedestal contacting the specimen shall be at most Ra = 0,40 μm determined in accordance with ISO 4287, and the parallelism shall be at most 0,01 mm specified in ISO 1101.
5.4 Micrometer calipers
Micrometer calipers shall be those for external measurement in accordance with ISO 3611 or have better precision.
5.5 Dial gauges
Dial gauges shall be those with a scale of 0,01 mm in accordance with ISO 463 or have a better precision.
5.6 Humidity measuring device
Humidity measuring device shall be equipped with a performance measuring or indicating the humidity with an accuracy of at most ±5 % RH.
6 Testing method
6.1 Measurement of specimen dimension
The horizontal and vertical lengths and thickness of the specimen shall be measured to a precision of 0,01 mm by using micrometer calipers for external measurement or a measuring instrument at least equal in precision thereto.